Pub Date : 2025-03-04DOI: 10.1016/j.surfin.2025.106157
Jingyuan Jin , Yujuan Zhang , Wenting Lv , Xuwen Zhao , Chengzhen Miao , Hefei Ji , Yu Yang
Hydrogen embrittlement is a serious obstacle to the safe storage and practical application of metal uranium. In this work, the hydrogen solution characteristics in the (130)/[001] twin grain boundary region in α-U metal are studied by first-principles theoretical and electron backscatter diffraction experimental methods. Our results show that the solution energy of hydrogen atom is the lowest at the (130)/[001] twin boundary plane, and increases as the distance from the twin boundary expands. Hydrogen atoms need to overcome energy barriers to diffuse both along and vertical to the twin boundary plane, i.e., the H atoms are trapped at the interstitial sites in the twin boundary region. It is also found that the s-d interaction between H and U atoms has induced the hydrogen trapping effect. Furthermore, the existence of Nb atom notably lowers the hydrogen solution energy and deepens the hydrogen trap in the region of (130)/[001] twin boundary, which is attributed to the intensified s-d interaction between H and U/Nb atoms. These findings are expected to reveal the underlying mechanism of the microstructural evolution of H atoms in U and provide a theoretical guidance for enlightenment to mitigate or inhibit hydriding corrosion in U metal.
{"title":"The s-d interaction induced hydrogen trapping effect in α-U (130)/[001] twin boundary region","authors":"Jingyuan Jin , Yujuan Zhang , Wenting Lv , Xuwen Zhao , Chengzhen Miao , Hefei Ji , Yu Yang","doi":"10.1016/j.surfin.2025.106157","DOIUrl":"10.1016/j.surfin.2025.106157","url":null,"abstract":"<div><div>Hydrogen embrittlement is a serious obstacle to the safe storage and practical application of metal uranium. In this work, the hydrogen solution characteristics in the (130)/[001] twin grain boundary region in <em>α</em>-U metal are studied by first-principles theoretical and electron backscatter diffraction experimental methods. Our results show that the solution energy of hydrogen atom is the lowest at the (130)/[001] twin boundary plane, and increases as the distance from the twin boundary expands. Hydrogen atoms need to overcome energy barriers to diffuse both along and vertical to the twin boundary plane, i.e., the H atoms are trapped at the interstitial sites in the twin boundary region. It is also found that the s-d interaction between H and U atoms has induced the hydrogen trapping effect. Furthermore, the existence of Nb atom notably lowers the hydrogen solution energy and deepens the hydrogen trap in the region of (130)/[001] twin boundary, which is attributed to the intensified s-d interaction between H and U/Nb atoms. These findings are expected to reveal the underlying mechanism of the microstructural evolution of H atoms in U and provide a theoretical guidance for enlightenment to mitigate or inhibit hydriding corrosion in U metal.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106157"},"PeriodicalIF":5.7,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In recent years, the development of hole-conductor-free printable mesoscopic perovskite solar cells (PMPSCs) based on carbon electrodes has been observed with considerable rapidity. The high stability and potential scalability of these cells have made them attractive options for researchers in the field. However, the perovskite solution has a high permeability resistance in the deep oxide scaffold. Here, we show that the cooperation of hybrid carbon doped with NiO electrode and differential pressure driven MAPbI3 crystal (DPDC) growth can effectively increase the hole extraction capability and effectively increase the perovskite loading amount in the oxide scaffold layer. Consequently, the power conversion efficiency (PCE) of the best-performing PMPSCs fabricated using hybrid carbon electrode and DPDC reached 11.82 %, showing a 15.43 % increase in the PCE when compared with the ordinary devices. After 1000 h in ambient air conditions with a relative humidity of 30–70 %, the PMPSCs can still maintain 85 % of the initial PCE.
{"title":"Synergy of hybrid carbon electrode and differential pressure driven MAPbI3 crystal growth on the performance of mesoscopic perovskite solar cells","authors":"Wenxiang Zhou, Shaojie Hong, Fanhua Yu, Jinlin Wan, Qinming Wang, Xingfu Zhou","doi":"10.1016/j.surfin.2025.106162","DOIUrl":"10.1016/j.surfin.2025.106162","url":null,"abstract":"<div><div>In recent years, the development of hole-conductor-free printable mesoscopic perovskite solar cells (PMPSCs) based on carbon electrodes has been observed with considerable rapidity. The high stability and potential scalability of these cells have made them attractive options for researchers in the field. However, the perovskite solution has a high permeability resistance in the deep oxide scaffold. Here, we show that the cooperation of hybrid carbon doped with NiO electrode and differential pressure driven MAPbI<sub>3</sub> crystal (DPDC) growth can effectively increase the hole extraction capability and effectively increase the perovskite loading amount in the oxide scaffold layer. Consequently, the power conversion efficiency (PCE) of the best-performing PMPSCs fabricated using hybrid carbon electrode and DPDC reached 11.82 %, showing a 15.43 % increase in the PCE when compared with the ordinary devices. After 1000 h in ambient air conditions with a relative humidity of 30–70 %, the PMPSCs can still maintain 85 % of the initial PCE.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106162"},"PeriodicalIF":5.7,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-03DOI: 10.1016/j.surfin.2025.106131
Boiketlo R.J. Thamaga, Thabang J. Theka, Rapelang G. Motsoeneng, Katlego L. Morulane, Jodinio Lemena, Hendrik C. Swart, David E. Motaung
We report on the fabrication of NiOCeO2 nanosheet-assembled hierarchical structures loaded with various weight percentages of Pt for selective detection of low concentrations of benzene vapour at low functional temperatures. Surface analyses showed that the nanomaterials are made of nanosheet-assembled hierarchical structures. Meanwhile, the structural X-ray photoelectron spectroscopy analyses confirmed the loading of Pt on the surface of NiOCeO2 heterostructures. The sensing findings showed that the 1.0 wt.% Pt-loaded NiOCeO2 sensor showed more sensitivity to benzene, amongst other target analytes. The sensor demonstrated a superior response of 2.7 to 2 ppm benzene, a sensitivity of 0.87 ppm-1, and a minimal detection limit of 0.07 ppm at a functional temperature of 100 °C. The sensor was very stable to benzene in the presence of 40–70 % relative humidity. Increasing the temperature, both the response and sensitivity reduced, while the detection limit increased, showing that 100 °C is an optimal temperature. The improved sensing characteristics were associated with higher surface defects and surface area, as well as the loading of Pt, which acted as a catalyst for benzene adsorption. The smaller optical band gap offered extra adsorption sites for benzene to capture electrons in the conduction band easily. The strong catalytic effect of Pt significantly enriched the sensitivity of chemical and electronic sensitization. The sensing mechanism linked to the benzene detection induced by the loading of Pt was discussed in detail.
{"title":"Facile fabrication of p-n heterostructure based on Pt/NiO-CeO2 nanosheet-assembled hierarchical structures for selective detection of benzene vapour","authors":"Boiketlo R.J. Thamaga, Thabang J. Theka, Rapelang G. Motsoeneng, Katlego L. Morulane, Jodinio Lemena, Hendrik C. Swart, David E. Motaung","doi":"10.1016/j.surfin.2025.106131","DOIUrl":"10.1016/j.surfin.2025.106131","url":null,"abstract":"<div><div>We report on the fabrication of NiO<img>CeO<sub>2</sub> nanosheet-assembled hierarchical structures loaded with various weight percentages of Pt for selective detection of low concentrations of benzene vapour at low functional temperatures. Surface analyses showed that the nanomaterials are made of nanosheet-assembled hierarchical structures. Meanwhile, the structural X-ray photoelectron spectroscopy analyses confirmed the loading of Pt on the surface of NiO<img>CeO<sub>2</sub> heterostructures. The sensing findings showed that the 1.0 wt.% Pt-loaded NiO<img>CeO<sub>2</sub> sensor showed more sensitivity to benzene, amongst other target analytes. The sensor demonstrated a superior response of 2.7 to 2 ppm benzene, a sensitivity of 0.87 ppm<sup>-1</sup>, and a minimal detection limit of 0.07 ppm at a functional temperature of 100 °C. The sensor was very stable to benzene in the presence of 40–70 % relative humidity. Increasing the temperature, both the response and sensitivity reduced, while the detection limit increased, showing that 100 °C is an optimal temperature. The improved sensing characteristics were associated with higher surface defects and surface area, as well as the loading of Pt, which acted as a catalyst for benzene adsorption. The smaller optical band gap offered extra adsorption sites for benzene to capture electrons in the conduction band easily. The strong catalytic effect of Pt significantly enriched the sensitivity of chemical and electronic sensitization. The sensing mechanism linked to the benzene detection induced by the loading of Pt was discussed in detail.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106131"},"PeriodicalIF":5.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-03DOI: 10.1016/j.surfin.2025.106153
Zhen Ma , Zehua Han , Menghui Wan , Zhiqiang Wang , Minjie Gao , Yanbao Zhao , Lei Sun
In recent years, there has been a notable focus on the development and design of multifunctional drug delivery systems tailored for photothermal, photodynamic, and chemotherapy triple-modality cancer treatment. The paper presents the utilization of gold nanorods (AuNRs) for photothermal effect, zinc oxide (ZnO) for photodynamic effect, mesoporous polydopamine (mPDA) loaded with curcumin (Cur), and 1-tetradecanol (TD) as a temperature-sensitive gating switch to achieve integration of functional organic/inorganic nanomaterials. The core-shell structural nanocarriers (AuNRs@ZnO@mPDA-Cur/TD) achieved a drug loading rate of 178 mg/g. It is important to note that the pH-responsive release properties of Cur have been observed due to the acid response of mPDA. Furthermore, the photothermal effect of AuNRs and mPDA facilitates the thermal-induced melting of TD and subsequent release of Cur upon near-infrared (NIR) irradiation, thereby achieving an effective integration of photothermal therapy and chemotherapy. Simultaneously, under NIR excitation, AuNRs inject thermal electrons into the conduction band of ZnO, leading to the generation of singlet oxygen species that confer remarkable photodynamic healing capabilities to the as-prepared carriers. The combined treatment involving photothermal, photodynamic, and chemotherapy demonstrated synergistic effects and superior efficacy compared to individual treatments. The core-shell nanodrug carrier AuNRs@ZnO@mPDA developed in this study exhibits pH-, NIR-, and temperature-responsive drug release properties, highlighting the synergistic impact of photothermal, photodynamic, and chemotherapy on tumor therapy. This research provides a novel concept and preparation strategy for a multifunctional smart drug delivery platform with integrated therapeutic efficacy.
{"title":"Development of a pH/NIR/temperature-responsive drug delivery system using AuNRs@ZnO@mPDA nanoparticles for synergistic cancer therapy","authors":"Zhen Ma , Zehua Han , Menghui Wan , Zhiqiang Wang , Minjie Gao , Yanbao Zhao , Lei Sun","doi":"10.1016/j.surfin.2025.106153","DOIUrl":"10.1016/j.surfin.2025.106153","url":null,"abstract":"<div><div>In recent years, there has been a notable focus on the development and design of multifunctional drug delivery systems tailored for photothermal, photodynamic, and chemotherapy triple-modality cancer treatment. The paper presents the utilization of gold nanorods (AuNRs) for photothermal effect, zinc oxide (ZnO) for photodynamic effect, mesoporous polydopamine (mPDA) loaded with curcumin (Cur), and 1-tetradecanol (TD) as a temperature-sensitive gating switch to achieve integration of functional organic/inorganic nanomaterials. The core-shell structural nanocarriers (AuNRs@ZnO@mPDA-Cur/TD) achieved a drug loading rate of 178 mg/g. It is important to note that the pH-responsive release properties of Cur have been observed due to the acid response of mPDA. Furthermore, the photothermal effect of AuNRs and mPDA facilitates the thermal-induced melting of TD and subsequent release of Cur upon near-infrared (NIR) irradiation, thereby achieving an effective integration of photothermal therapy and chemotherapy. Simultaneously, under NIR excitation, AuNRs inject thermal electrons into the conduction band of ZnO, leading to the generation of singlet oxygen species that confer remarkable photodynamic healing capabilities to the as-prepared carriers. The combined treatment involving photothermal, photodynamic, and chemotherapy demonstrated synergistic effects and superior efficacy compared to individual treatments. The core-shell nanodrug carrier AuNRs@ZnO@mPDA developed in this study exhibits pH-, NIR-, and temperature-responsive drug release properties, highlighting the synergistic impact of photothermal, photodynamic, and chemotherapy on tumor therapy. This research provides a novel concept and preparation strategy for a multifunctional smart drug delivery platform with integrated therapeutic efficacy.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106153"},"PeriodicalIF":5.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-03DOI: 10.1016/j.surfin.2025.106151
Muhammad Hammad Aziz , Misbah Latif , Rizwan Ul Hassan , Taimoor Naeem , Muhammad Asif , Manawwer Alam , Syed Mansoor Ali , Qunfeng Zeng
Antibiotics are being released into the environment due to their extensive use; thus, treating bacteria in aquatic environments that are resistant to antibiotics rapidly and effectively is serious. In this study, a Z-scheme BiFeO3/Ag/Cr2O3 photocatalyst for tetracycline degradation was prepared using the hydrothermal method. The photodegradation efficiency of TC-HCl was 91.5% following a 90-min exposure to visible light. Additionally, the recyclability test confirmed the stability of the BiFeO3/Ag/Cr2O3 nanocomposite during tetracycline photodegradation by achieving an 86% degrading efficiency after four cycles. According to the pseudo-first-order degradation, the rate constant of BiFeO3/Ag/Cr2O3 was 0.089 min−1 as compared to BiFeO3/Ag (0.040 min−1). Also, free radicals and •OH may accelerate antibiotic degradation, allowing for the development of helpful breakdown procedures. The ESR investigation revealed the presence of DMPO- •O2Hand DMPO-•OH, with signals intensifying up to a visible exposure time of 08 minutes. Moreover, LC-MS spectrometry assisted in clarifying the TC photodegradation mechanisms. Interestingly, bacterial strains such as Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) growth suppression were assessed using the well diffusion method via BiFeO3/Ag/Cr2O3 nanocomposite. Therefore, BiFeO3/Ag/Cr2O3 nanocomposite is a promising candidate for toxicity assessments and wastewater treatment due to its long-term reliability and excellent degradation efficiency.
{"title":"Photocatalytic breakdown of tetracycline via Z-scheme BiFeO3/Ag/Cr2O3 nanocomposite under visible light irradiation: Degradation mechanism, toxicity evaluation and antibacterial activity","authors":"Muhammad Hammad Aziz , Misbah Latif , Rizwan Ul Hassan , Taimoor Naeem , Muhammad Asif , Manawwer Alam , Syed Mansoor Ali , Qunfeng Zeng","doi":"10.1016/j.surfin.2025.106151","DOIUrl":"10.1016/j.surfin.2025.106151","url":null,"abstract":"<div><div>Antibiotics are being released into the environment due to their extensive use; thus, treating bacteria in aquatic environments that are resistant to antibiotics rapidly and effectively is serious. In this study, a Z-scheme BiFeO<sub>3</sub>/Ag/Cr<sub>2</sub>O<sub>3</sub> photocatalyst for tetracycline degradation was prepared using the hydrothermal method. The photodegradation efficiency of TC-HCl was 91.5% following a 90-min exposure to visible light. Additionally, the recyclability test confirmed the stability of the BiFeO<sub>3</sub>/Ag/Cr<sub>2</sub>O<sub>3</sub> nanocomposite during tetracycline photodegradation by achieving an 86% degrading efficiency after four cycles. According to the pseudo-first-order degradation, the rate constant of BiFeO<sub>3</sub>/Ag/Cr<sub>2</sub>O<sub>3</sub> was 0.089 min<sup>−1</sup> as compared to BiFeO<sub>3</sub>/Ag (0.040 min<sup>−1</sup>). Also, free radicals <span><math><mrow><mo>•</mo><msubsup><mi>O</mi><mn>2</mn><mo>−</mo></msubsup><mspace></mspace></mrow></math></span>and •OH may accelerate antibiotic degradation, allowing for the development of helpful breakdown procedures. The ESR investigation revealed the presence of DMPO- •<em>O</em><sub>2</sub>Hand DMPO-•OH, with signals intensifying up to a visible exposure time of 08 minutes. Moreover, LC-MS spectrometry assisted in clarifying the TC photodegradation mechanisms. Interestingly, bacterial strains such as Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) growth suppression were assessed using the well diffusion method via BiFeO<sub>3</sub>/Ag/Cr<sub>2</sub>O<sub>3</sub> nanocomposite. Therefore, BiFeO<sub>3</sub>/Ag/Cr<sub>2</sub>O<sub>3</sub> nanocomposite is a promising candidate for toxicity assessments and wastewater treatment due to its long-term reliability and excellent degradation efficiency.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106151"},"PeriodicalIF":5.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-02DOI: 10.1016/j.surfin.2025.106147
Hongtao Cui, Xiaolong Fang, Xiaowen Qi, Youfu Wang, He Wang, Zhenze Zhai, Feiyue Zhang, Qiufang Hu, Jia Liu
A low-cost and efficient method for fabricating photocatalytic Ti/W-based films was developed using simple laser ablation and deposition in air. A laser marker was employed to ablate Ti/W targets separately through the glass substrate, resulting in a superhydrophilic core-shell Ti/W-based film deposited on the glass surface. The photocatalytic performance of the film was optimized by varying the laser ablation process parameters, which altered the composition of the metal core and oxide shell. Experimental results demonstrated that under 50W UV irradiation, the optimal sample decomposed 86.73 % of a methyl orange (MO) solution and 100 % of methyl stearate (MS) coated on the film surface within 50 h, restoring the film's contact angle to nearly 0°, close to its initial state. The sample also exhibited excellent photocatalytic self-cleaning properties. Furthermore, the film demonstrated high transmittance of 84 % at 550 nm and effective anti-fog properties. Notably, the sample maintained its 0° contact angle even after two months of outdoor exposure, a result not previously reported. The films also demonstrated superior photocatalysis property after 1h acid (pH=1) immersion and performance stability after 1h alkaline (pH=13) immersion. These properties highlight the broad potential of this laser deposition technique for environmental applications.
{"title":"Laser-fabricated core-shell Ti/W based photocatalytic films with superhydrophilic self-cleaning properties","authors":"Hongtao Cui, Xiaolong Fang, Xiaowen Qi, Youfu Wang, He Wang, Zhenze Zhai, Feiyue Zhang, Qiufang Hu, Jia Liu","doi":"10.1016/j.surfin.2025.106147","DOIUrl":"10.1016/j.surfin.2025.106147","url":null,"abstract":"<div><div>A low-cost and efficient method for fabricating photocatalytic Ti/W-based films was developed using simple laser ablation and deposition in air. A laser marker was employed to ablate Ti/W targets separately through the glass substrate, resulting in a superhydrophilic core-shell Ti/W-based film deposited on the glass surface. The photocatalytic performance of the film was optimized by varying the laser ablation process parameters, which altered the composition of the metal core and oxide shell. Experimental results demonstrated that under 50W UV irradiation, the optimal sample decomposed 86.73 % of a methyl orange (MO) solution and 100 % of methyl stearate (MS) coated on the film surface within 50 h, restoring the film's contact angle to nearly 0°, close to its initial state. The sample also exhibited excellent photocatalytic self-cleaning properties. Furthermore, the film demonstrated high transmittance of 84 % at 550 nm and effective anti-fog properties. Notably, the sample maintained its 0° contact angle even after two months of outdoor exposure, a result not previously reported. The films also demonstrated superior photocatalysis property after 1h acid (<em>pH</em>=1) immersion and performance stability after 1h alkaline (<em>pH</em>=13) immersion. These properties highlight the broad potential of this laser deposition technique for environmental applications.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106147"},"PeriodicalIF":5.7,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-02DOI: 10.1016/j.surfin.2025.106150
Abolfazl Arjmandi , Huichao Bi , Stefan Urth Nielsen , Kim Dam-Johansen
This study examines the influence of substrate properties on the film formation mechanism of waterborne (WB) anti-corrosive coatings, a sustainable alternative to solvent-based coatings. While the environmental benefits of WB coatings, such as reduced VOC emissions and improved workplace safety, are well recognized, their performance on real-world substrates has been underexplored. This research addresses how substrate characteristics, including roughness, hydrophilicity, and water absorption, affect the water-loss profile during the coating process and, consequently, the film formation behavior and final properties of the cured coating. A combination of gravimetry and Fourier Transform Infrared Spectroscopy (FTIR) was employed to monitor water-loss profiles both independently and comparatively. Cryo-Scanning Electron Microscopy (Cryo-SEM) of forming films captured at distinct stages of water loss (t = 0, end of stage I, II, and III) revealed the morphological evolution of the coating. Furthermore, rheological analyses were performed to assess the drying and curing behavior on different substrates. These findings provide valuable insights into the substrate-dependent behavior of WB coatings, emphasizing their potential and limitations for industrial applications. By understanding the critical role of substrates, this work advances the development of more robust WB anti-corrosive coatings for diverse environmental conditions and substrate types.
{"title":"Unveiling the role of substrate properties in shaping film formation in crosslinked waterborne coatings","authors":"Abolfazl Arjmandi , Huichao Bi , Stefan Urth Nielsen , Kim Dam-Johansen","doi":"10.1016/j.surfin.2025.106150","DOIUrl":"10.1016/j.surfin.2025.106150","url":null,"abstract":"<div><div>This study examines the influence of substrate properties on the film formation mechanism of waterborne (WB) anti-corrosive coatings, a sustainable alternative to solvent-based coatings. While the environmental benefits of WB coatings, such as reduced VOC emissions and improved workplace safety, are well recognized, their performance on real-world substrates has been underexplored. This research addresses how substrate characteristics, including roughness, hydrophilicity, and water absorption, affect the water-loss profile during the coating process and, consequently, the film formation behavior and final properties of the cured coating. A combination of gravimetry and Fourier Transform Infrared Spectroscopy (FTIR) was employed to monitor water-loss profiles both independently and comparatively. Cryo-Scanning Electron Microscopy (Cryo-SEM) of forming films captured at distinct stages of water loss (<em>t</em> = 0, end of stage I, II, and III) revealed the morphological evolution of the coating. Furthermore, rheological analyses were performed to assess the drying and curing behavior on different substrates. These findings provide valuable insights into the substrate-dependent behavior of WB coatings, emphasizing their potential and limitations for industrial applications. By understanding the critical role of substrates, this work advances the development of more robust WB anti-corrosive coatings for diverse environmental conditions and substrate types.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106150"},"PeriodicalIF":5.7,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-01DOI: 10.1016/j.surfin.2025.106053
Tiantian Wei , Xiujuan Zhang , Zhuandi Shao , Jianwei Du , Hong Deng , Xueming Liu , Zhang Lin , Chaili Yuan
The urgent demand for phosphorus flame retardants in the flame-retardant industry and the shortage of industrial phosphorus resources present supply-demand imbalance. Recovering phosphorus from phosphorus-containing sludge in the form of hydroxyapatite (HAP) and using it for flame retardancy can alleviate supply-demand imbalance as well as the problem of phosphorus contamination of sludge. In this study, phosphoric acid etching sludge was converted into a multifunctional HAP flame retardant through the synergistic regulation of crystal growth and surface hydroxylation. The thermal stability of HAP was enhanced by modulating the Ca/P molar ratio and crystallinity during crystal growth. The mechanical strength of HAP was enhanced by regulating the morphology and size during crystal growth. The generation of ∼200 nm rod-shaped HAP underwent a dissolution regrowth process, and CTAB was the main structure-directing agent. Hydroxylation of the crystal surface was achieved by hydrothermal-calcination reaction, which enhanced the compatibility of HAP with the substrate and improved the tensile mechanical strength of the substrate. At 10 wt%, the vertical combustion level of HC-HAP was increased from V-2 to V-1 and the limiting oxygen index (LOI) was increased from 22.0% to 26.5%, compared with the addition of etching sludge. This study provides a new idea for the resourceful secondary utilization of industrial phosphorus-containing sludge and the development of multifunctional inorganic phosphorus-based flame retardants.
{"title":"Coregulation of crystal growth and hydroxylation induces the conversion of phosphorus-containing sludge into multifunctional hydroxyapatite nano flame retardant","authors":"Tiantian Wei , Xiujuan Zhang , Zhuandi Shao , Jianwei Du , Hong Deng , Xueming Liu , Zhang Lin , Chaili Yuan","doi":"10.1016/j.surfin.2025.106053","DOIUrl":"10.1016/j.surfin.2025.106053","url":null,"abstract":"<div><div>The urgent demand for phosphorus flame retardants in the flame-retardant industry and the shortage of industrial phosphorus resources present supply-demand imbalance. Recovering phosphorus from phosphorus-containing sludge in the form of hydroxyapatite (HAP) and using it for flame retardancy can alleviate supply-demand imbalance as well as the problem of phosphorus contamination of sludge. In this study, phosphoric acid etching sludge was converted into a multifunctional HAP flame retardant through the synergistic regulation of crystal growth and surface hydroxylation. The thermal stability of HAP was enhanced by modulating the Ca/P molar ratio and crystallinity during crystal growth. The mechanical strength of HAP was enhanced by regulating the morphology and size during crystal growth. The generation of ∼200 nm rod-shaped HAP underwent a dissolution regrowth process, and CTAB was the main structure-directing agent. Hydroxylation of the crystal surface was achieved by hydrothermal-calcination reaction, which enhanced the compatibility of HAP with the substrate and improved the tensile mechanical strength of the substrate. At 10 wt%, the vertical combustion level of HC-HAP was increased from V-2 to V-1 and the limiting oxygen index (LOI) was increased from 22.0% to 26.5%, compared with the addition of etching sludge. This study provides a new idea for the resourceful secondary utilization of industrial phosphorus-containing sludge and the development of multifunctional inorganic phosphorus-based flame retardants.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"60 ","pages":"Article 106053"},"PeriodicalIF":5.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Herein, a novel Z-scheme BiOBr/BiOF heterojunction was synthesized via one-step microwave-assisted hydrothermal method, which was integrated with peroxymonosulfate (PMS) to design a sulfate radical (•SO4−) based advanced oxidation processes (AOPs) system through PMS activation (BiOBr/BiOF-PMS) toward Levofloxacin (LFX) photodegradation. In order to achieving an optimal degradation efficiency, the formed BiOBr/BiOF-PMS was systematically investigated and the operational parameters for LFX photodegradation were thoroughly optimized. Thereby, the optimal BiOBr/BiOF exhibits a higher photodegradation efficiency of 89.8 % toward LFX via PMS activation compared to others including PMS alone, BiOBr, BiOF and BiOBr/BiOF with varied ratios. Furthermore, the BiOBr/BiOF has superior stability for multiple cycles and universal applicability for degrading various contaminants. This can mainly be attributed that the formed heterojunction between BiOBr and BiOF and the enhanced concentration of oxygen vacancies (OVs) of BiOBr/BiOF heterojunction, which can synchronously promote the separation and transmission of the photogenerated charges (e−/h+) and thereby lead to more reactive oxygen species (ROS). As well, the expanded optical responsiveness and increased specific surface area of BiOBr/BiOF are also mainly responsible for the improved photodegradation capability. Free radical capture experiments and ESR technique verify that the •O2− is the primary ROS and •SO4− and •OH play subordinative role. The photodegradation pathways of LFX were unraveled based on the identified intermediates with a liquid-chromatography-mass (LC-MS) technique. Consequently, this study offers a novel route by developing Bi-based heterojunction photocatalyst to activate PMS for refractory antibiotic photodegradation.
{"title":"Microwave-assisted synthesis of hierarchical BiOBr/BiOF Z-scheme heterojunction with abundant oxygen vacancies for activating peroxymonosulfate toward photodegradation of the refractory levofloxacin","authors":"Guohua Dong , Dongzhe Zhang , Xinjia Zhang , Zhuangfang Zhang , Dong-feng Chai , Lijian Meng , Wanxia Tang , Ming Zhao , Wenzhi Zhang","doi":"10.1016/j.surfin.2025.106143","DOIUrl":"10.1016/j.surfin.2025.106143","url":null,"abstract":"<div><div>Herein, a novel Z-scheme BiOBr/BiOF heterojunction was synthesized via one-step microwave-assisted hydrothermal method, which was integrated with peroxymonosulfate (PMS) to design a sulfate radical (<strong>•</strong>SO<sub>4</sub><sup>−</sup>) based advanced oxidation processes (AOPs) system through PMS activation (BiOBr/BiOF-PMS) toward Levofloxacin (LFX) photodegradation. In order to achieving an optimal degradation efficiency, the formed BiOBr/BiOF-PMS was systematically investigated and the operational parameters for LFX photodegradation were thoroughly optimized. Thereby, the optimal BiOBr/BiOF exhibits a higher photodegradation efficiency of 89.8 % toward LFX via PMS activation compared to others including PMS alone, BiOBr, BiOF and BiOBr/BiOF with varied ratios. Furthermore, the BiOBr/BiOF has superior stability for multiple cycles and universal applicability for degrading various contaminants. This can mainly be attributed that the formed heterojunction between BiOBr and BiOF and the enhanced concentration of oxygen vacancies (OVs) of BiOBr/BiOF heterojunction, which can synchronously promote the separation and transmission of the photogenerated charges (e<sup>−</sup>/h<sup>+</sup>) and thereby lead to more reactive oxygen species (ROS). As well, the expanded optical responsiveness and increased specific surface area of BiOBr/BiOF are also mainly responsible for the improved photodegradation capability. Free radical capture experiments and ESR technique verify that the <strong>•</strong>O<sub>2</sub><sup>−</sup> is the primary ROS and <strong>•</strong>SO<sub>4</sub><sup>−</sup> and <strong>•</strong>OH play subordinative role. The photodegradation pathways of LFX were unraveled based on the identified intermediates with a liquid-chromatography-mass (LC-MS) technique. Consequently, this study offers a novel route by developing Bi-based heterojunction photocatalyst to activate PMS for refractory antibiotic photodegradation.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"61 ","pages":"Article 106143"},"PeriodicalIF":5.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143549737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This report discusses how the shape of the heterogeneous nucleation surface affects the formation of hydrogen nanobubbles, which are used in fabricating the hollow structure of gold nanoparticles. The hydrogen nanobubbles nucleate and grow through a supersaturation mechanism where hydrogen atoms are generated during the electrochemical process. The concave surface of a cylindrical anodic aluminum oxide (AAO) pore facilitates the homogeneous nucleation of hydrogen nanobubbles without the need for a three-phase contact line. This makes AAO pores useful as templates for synthesizing spherical hollow gold structures (HAuNPs) via a disproportionation reaction and electro less process. In contrast, the flat surface of polydimethylsiloxane (PDMS) on the electrochemical chip can be utilized to produce spherical caps of hydrogen nanobubbles and bowl-shaped gold nanoparticles (BAuNPs) due to its low interaction energy. Additionally, the shape of BAuNPs can be adjusted by modifying the surface wettability, which is related to the water contact angle. A hydrophobic substrate produces a smaller contact angle for hydrogen nanobubbles compared to hydrophilic substrates. However, the variation in the contact angle of hydrogen nanobubbles is much less than the change in the water contact angle of the substrate. Furthermore, as the water contact angle of the substrate increases, the size of the hydrogen nanobubbles decreases.
{"title":"Effect of surface curvature and wettability on the shape of nanobubble and hollow structure of gold nanoparticles","authors":"Kueakul Khowamnuaychok , Chumphon Luangchaisri , Chivarat Muangphat","doi":"10.1016/j.surfin.2025.106045","DOIUrl":"10.1016/j.surfin.2025.106045","url":null,"abstract":"<div><div>This report discusses how the shape of the heterogeneous nucleation surface affects the formation of hydrogen nanobubbles, which are used in fabricating the hollow structure of gold nanoparticles. The hydrogen nanobubbles nucleate and grow through a supersaturation mechanism where hydrogen atoms are generated during the electrochemical process. The concave surface of a cylindrical anodic aluminum oxide (AAO) pore facilitates the homogeneous nucleation of hydrogen nanobubbles without the need for a three-phase contact line. This makes AAO pores useful as templates for synthesizing spherical hollow gold structures (HAuNPs) via a disproportionation reaction and electro less process. In contrast, the flat surface of polydimethylsiloxane (PDMS) on the electrochemical chip can be utilized to produce spherical caps of hydrogen nanobubbles and bowl-shaped gold nanoparticles (BAuNPs) due to its low interaction energy. Additionally, the shape of BAuNPs can be adjusted by modifying the surface wettability, which is related to the water contact angle. A hydrophobic substrate produces a smaller contact angle for hydrogen nanobubbles compared to hydrophilic substrates. However, the variation in the contact angle of hydrogen nanobubbles is much less than the change in the water contact angle of the substrate. Furthermore, as the water contact angle of the substrate increases, the size of the hydrogen nanobubbles decreases.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"60 ","pages":"Article 106045"},"PeriodicalIF":5.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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